Porto vs Lisbon

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Lisbon edges ahead as the better destination in December. Lisbon offers 7 hours of daily sunshine with only 9 rain days, while Porto sees 6 sunshine hours and 13 rain days.

Porto is on the cooler side at 14°C, requiring warmer clothing. Lisbon is cooler at 14°C.

For travelers who prioritize dry weather, Lisbon is the stronger choice in December. Lisbon receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Porto reaches an average high of 14°C (57°F) and drops to 7°C (45°F) at night during December. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Lisbon averages 14°C (57°F) for the high and 10°C (50°F) for the low, with a daily range of 4°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in December.

Porto receives approximately 171 mm of rainfall across 13 rain days during December. You can expect rain roughly every other day.

Lisbon sees 79 mm over 9 rain days. That makes Lisbon the drier option by 4 rain days and 92 mm of total precipitation.

Both cities share similar humidity levels at 65%.